Means for securing heat insulation in position.



M. BiRTW!STLE & E. JONES.

MEANS OF SECURING HEAT INSULATION IN POSITION.

APPLICATION FILED MAY 1. 1916.

l ,QUQA FS Pa tenred Oct. 24, 1916.

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MARK IBIRTWISTLE AND EDGAR JONES, 0F PETONE, WELLINGTON, NEW ZEALAND.

MEANS OF SECURING HEAT INSULATION IN POSITION.

Application filed May 1, 1916.

To all whom it may concern:

Be it known that we, MARK BIRTWISTLE and EDGAR Jonas, subjects of theKing of Great Britain and Ireland, residing at Ietone, in the city ofWellington, in the Dominion of New Zealand, have invented a new anduseful Improvement in Means of Securing Heat Insulation in Position; andwe do hereby declare the following to be a full, clear, and exactdescription of the same.

This invention relates to that class of in sulation for employment uponsurfaces for the purpose of preventing a reduction or in crease oftemperature of such surface from external influences.

The object of the present invention is to provide an improved method andmeans of securing such insulation in position and is especially usefulon steam pipes, steam valve fittings, ammonia pipes and such otherarticles requiring heat insulation.

According to this invention the insulating material is provided withsuitable clips attached to the outside surface of the insulatingmaterial preferably near the edges thereof and these edges or theadjacent edges of an adjacent mattress are brought together and securedin position by lacing adapted to be passed around the clips.

The insulating material is usually in the form of mattresses or pads ofthe required area to cover the surface or to surround the article to beinsulated and the clips are attached by riveting or otherwise to theoutside surface thereof preferably along the edges of the mattresses orpads. When a mattress or pad is folded around a cylindrical surface andits two edges brought together they are fastened by means of asbestostwine laces or fine wire interlaced into such clips and serve to drawthe edges together and retain them into close engagement. When themattresses or pads are spread over fiat oval or large cylindricalsurfaces the edges thereof may be fastened to the corresponding adjacentedges of the other mattress or mattresses by lacing in the manner abovedescribed.

The invention will now be described with the aid of the accompanyingdrawings and the novel features thereof pointed out in the claims.

On the drawings, Figure 1 is a perspective view of a pipe encircled byan insulation pad secured in position according to our invention. Fig. 2is an elevation of a flat or Specification of Letters Patent.

Patented @ct. 2 1, 1916:.

Serial No. 94,817.

large cylindrical surface having a plurality of mattresses securedtogether in accordance with our invention. Fig. 3 is a plan show ing indetail the lacing. Fig. 4 is a cross section through a portion of themattress showing a clip in position. Fig. 5 is a view showing anotherform of clip.

Referring to the drawings but more particularly to Figs. 1 and 3, padsor inattresses 1 of the usual asbestos cloth filled with a laggingpreparation of asbestos fiber or magnesia, are placed around a pipe 2, arow of lacing clips 3 being provided upon the exterior edges 5 and 6 ofthe pad as shown. A lacing 7 of asbestos twine or fine wire isinterlaced along the clips in the manner shown thus serving to draw theedges 5 and 6 into close engagement and retain them in that position.There a joint occurs between two mattresses extending end to end as inFig. 1, the lacing may be continuous along the joint.

The preferred form of clips are those shown in Figs. 4: and 5. In Fig.4: the clip 3 has a shoulder 8 resting upon the exterior wall 9 of themattress while a washer 10 of asbestos cloth is located between the wall9 and a metal washer 11 over which the stem of the clip is riveted. InFig. 5 a cloth washer is not employed the metal washer 11 being simplyintroduced between the wall 9 and the riveted end of the stem.

In Fig. 2 are illustrated mattresses of the insulating material employedupon a flat or large cylindrical or other surface. In this case themattresses have rows of lacing clips 3 extending along the edges thatwill be adjacent to the edges of one or more mattresses. In this casethe lacing 7 fastens the adjacent edges of the mattress one to the otheras is clearly shown in the figure.

When employed upon a pipe the joint between the two mattresses extendingend to end may be covered by a metal strap clamp 12 as in Fig. 1. Thisclamp may also serve to retain the mattress in position upon the pipeduring the process of lacing. Or in place of the clamp the ends may belaced together in the same manner as the longitudinal joints.

What we claim is 1. In combination, a plurality of pairs of heatinsulating mattresses, the adjacent edges of one pair being in alinementwith the adjacent edges of the next pair; each of said pairs ofmattresses meeting the adjacent pair and forming alined contacting edgesintersecting said alined adjacent edges at substantially right angles;clips secured to said adjacent edges; laces engaging in said clips thelaces being continuous from one pair of adjacent edges and crossing theline formed by said alined contacting edges; and a holding meansextending continuously along the line formed by said alined c011-tacting edges and crossing said laces, and crossing at right angles theline formed by said alined adjacent edges.

2. In combination, a plurality of pairs of heat insulating mattresses,the adjacent edges of one pair being in alinement With the adjacentedges of the next pair; each of said pairs of mattresses meeting theadjacent pair and forming alined contacting edges intersecting saidalined adjacent edges at substantially right angles; clips secured tosaid adjacent edges; laces engaging in said clips, the laces beingcontinuous from one pair of adjacent edges and crossing the line formedby said alined contacting edges; and a strip of metal forming a metalclamp extending continuously along the line formed by said alinedcontacting edges and crossing said laces and crossing at right anglesthe line formed by said adjacent edges.

In testimony whereof, We have signed our names to this specification inthe presence of two subscribing Witnesses.

MAR- K BIRTXVISTLE. EDGAR JONES.

lVitnesses SYDNEY H. Hices, E. P. ODONNELL.

Copies of this patent may be obtained for five cents eaekaby addressingthe Commissioner of latents,

' Washington, D. C.

